OFDMA

Also found in: Dictionary, Acronyms, Wikipedia.

OFDMA

(Orthogonal Frequency Division Multiple Access) A cellular air interface based on OFDM for multiple, simultaneous users. The multiuser capability is achieved by assigning each user a subset of OFDM subcarriers (see OFDM). Used in communications networks such as WiMAX and LTE, OFDMA provides air interfaces that are superior to CDMA and TDMA. See SC-FDMA, WiMAX, LTE, CDMA and TDMA.

Mentioned in ?

References in periodicals archive ?

To overcome synchronization problem in OFDMA system, NI PXI 6683 timing and synchronization module is employed for 10 MHz clock signal.

MEASUREMENT BASED INVESTIGATION OF CYCLOSTATIONARITY OF OFDMA SIGNALS

The performance is evaluated using Matlab based system level simulator that is enhanced with the HGBBDSA algorithm to allocate the OFDMA subcarriers.

Outage Probability Analysis of Co-Tier Interference in Heterogeneous Network

Lee, "Swap-based frequency-domain packet scheduling algorithm for small-queue condition in OFDMA," IEEE Communications Letters, vol.

A New Swap-Based Frequency-Domain Packet Scheduling Algorithm in OFDMA System with Data Queue Size Constraints

In this section, OFDMA, NOMA, Sparse code multiple access (SCMA) and IDMA are investigated to highlight their fortes and weaknesses as candidates for FRA.

Improved IDMA for multiple access of 5G

In the OFDMA cellular network, the performance of the edge region stays reduced due to the inter-cell interference.

Throughput performance for heterogeneous LTE network by using Fractional Frequency Reuse method

Simulations were also performed for a system with OFDMA uplink victim and OFDMA uplink interferer.

Interference analysis and spectrum sensing of multiple cognitive radio systems

OFDMA systems have much higher frequency efficiency, but due to their structural characteristics, co-sub-channel interferences inevitably occur.

Sub-channel allocation based on multi-level priority in OFDMA systems

WiMax uses OFDMA that has ability to split data into multiple logical data streams for achieving the higher data rate[2].

AN EFFICIENT DOWNLINK RESOURCE ALLOCATION IN 802.16 WIMAX BY USING AN UPDATED DYNAMIC RECOURSE ALLOCATION ALGORITHM

Alternatively, an OFDM-based multiple access mechanism, namely the OFDMA, assigns sets of subcarriers to different users.

Sophistication techniques of fourth generations in neoteric mobile LTE and LTE-advanced

In [9], a heuristic scheduler design maximizes the system throughput while providing fairness between users in an OFDMA system was proposed.

An efficient cross-layer scheduling with partial Channel State Information

But given the lack of self developed momentum as a standard, WiBro has joined WiMAX and agreed to harmonize with the similar OFDMA 902.

WiMAX--future comms?

A realistic 20MSPS 256point complex FFT would take less than 5% of the PC102's capability; while a 2048point transform for OFDMA mode would require just 8%.